diff --git a/fuzztest/internal/domains/regexp_dfa.cc b/fuzztest/internal/domains/regexp_dfa.cc
index acca7e1e5..e798d2385 100644
--- a/fuzztest/internal/domains/regexp_dfa.cc
+++ b/fuzztest/internal/domains/regexp_dfa.cc
@@ -31,7 +31,6 @@
 #include "absl/random/distributions.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
-#include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 #include "./common/logging.h"
 #include "./fuzztest/internal/logging.h"